Getting the SpinFast Next week
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From: Makena, Maui & NM
Last edited by siffert; Dec 16, 2008 at 12:09 PM.
Team Owner
Joined: Feb 2001
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From: Short Hills, NJ
So what? I did say and have similar DA & weather from your 11.79 @ 117.26 time (+500 DA). Meaning I think the FAST will only pick up .10 given the same DA and weather as his last 11.79 time. Keep in mind if he cuts a 11.59 with a -200 DA (versus +500 DA last time), then clearly about .10 was picked by DA. If you want an analysis prediction for differing DA's, I'll try and work up an Excel sheet for you!
But, the temps, barometer, humidity, wind conditions, track prep, fuel levels, tire temp/tread depths/rubber compound quality etc etc are NEVER exactly the same from one track visit to the next...never have been, never will be.
So using statements/stipulations such as "all else being equal" or "given similar weather/DA as your previous best" almost don't make sense because bringing all of those critical variables together is an impossible task.
If he runs 3/10ths quicker (or even 1/10th slower) one certainly cannot say that the FAST intake is the sole reason for it.
Then again, one cannot say it was not the sole reason for it either.
We can extrapolate, calculate and recalculate for weather changes, sixty foots and horsepower/torque until we're blue in the face but in the end that time slip is all that matters.
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From: Makena, Maui & NM
Good point, you did actually preface that. But, the temps, barometer, humidity, wind conditions, track prep, fuel levels, tire temp/tread depths/rubber compound quality etc etc are NEVER exactly the same from one track visit to the next...never have been, never will be.
So using statements/stipulations such as "all else being equal" or "given similar weather/DA as your previous best" almost don't make sense because bringing all of those critical variables together is an impossible task. :
But, the temps, barometer, humidity, wind conditions, track prep, fuel levels, tire temp/tread depths/rubber compound quality etc etc are NEVER exactly the same from one track visit to the next...never have been, never will be.So using statements/stipulations such as "all else being equal" or "given similar weather/DA as your previous best" almost don't make sense because bringing all of those critical variables together is an impossible task. :
Professional drag and road racing teams do this all the time, it is SOP.
Amazing things can be done with data logging and computers these days! Its up to you to decide how professsional and accurate you want to be
Finally, it is altitude, temp, humidity and barometer that make up the DA number, which is why DA is so commonly used for comparison. I dont know how much data the OP logs, but even if nothing, the DA number for the day he runs is, by far and away, the major outside variable. I hope I am wrong and he picks up .30 (after correcting for changes in DA etc.) with his SpinFast. It would be terrific ET gained for the money!
Last edited by siffert; Dec 16, 2008 at 03:21 PM.
Thread Starter
Burning Brakes
Joined: Jan 2003
Posts: 1,150
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From: League City tx
The Spinfast manifold will definately add much HP/TQ and you will definately notice it especially if it was retuned. In the case of the op
it seems like you done more steps to DRAG PREP the car with the wide body , Gears Tires.etc than making an effort to gety good dyno numbers. I dont know why you never got LT HEADERS and porting of your OEM Manifold and TB. You are adding a ported fast to a car in hopes of reaching 400 RWHP/TQ. Most cars dont but quite a few have but they all have LT headers. Your 11.70's is great and I would think
11.40's with some seat time. I know your dyno numbers will improve
but it will be interesting to see how you come in w/o LT HEADERS.
Good luck, Leon
it seems like you done more steps to DRAG PREP the car with the wide body , Gears Tires.etc than making an effort to gety good dyno numbers. I dont know why you never got LT HEADERS and porting of your OEM Manifold and TB. You are adding a ported fast to a car in hopes of reaching 400 RWHP/TQ. Most cars dont but quite a few have but they all have LT headers. Your 11.70's is great and I would think
11.40's with some seat time. I know your dyno numbers will improve
but it will be interesting to see how you come in w/o LT HEADERS.
Good luck, Leon
and all WITHOUT LT headers!!
:l ol:1/4 mile times to come mid january when the track reopens
Daren
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St. Jude Donor '08
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From: Short Hills, NJ
We've seen what Z06 maniolds and mid sections have done on mostly stock LS2s
and now even more results on a slightly more modified (CAI, FAST, tuning) car...but I am curious what a good set of long tubes might gain (if at all) over the Z06 manifold/exhaust set up now. 
Thread Starter
Burning Brakes
Joined: Jan 2003
Posts: 1,150
Likes: 2
From: League City tx
True, one more pull after a short cool down and the torque would've cracked that 400 mark for sure.
We've seen what Z06 maniolds and mid sections have done on mostly stock LS2s and now even more results on a slightly more modified (CAI, FAST, tuning) car...but I am curious what a good set of long tubes might gain (if at all) over the Z06 manifold/exhaust set up now.
We've seen what Z06 maniolds and mid sections have done on mostly stock LS2s
and now even more results on a slightly more modified (CAI, FAST, tuning) car...but I am curious what a good set of long tubes might gain (if at all) over the Z06 manifold/exhaust set up now.
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From: Makena, Maui & NM
Last edited by siffert; Dec 25, 2008 at 01:56 AM.
Thread Starter
Burning Brakes
Joined: Jan 2003
Posts: 1,150
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From: League City tx
Safety Car
Joined: Aug 2006
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From: Makena, Maui & NM
Burning Brakes
Joined: Aug 2008
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From: The Woodlands TX
Woohoo...getting the SpinFAST Manifold next week, Any guesses on my new 1/4 mile time? I will be having it retuned with wideband after installing (probably Monday of the following week) Hoping for 405/400. Could get more.(mods in sig)
HRP doesnt open until the 9th of January, so Im hoping I will be there then. Closest Guess gets..........a coookie!!
Daren
P.S. My guess is an 11.43 @ 121
HRP doesnt open until the 9th of January, so Im hoping I will be there then. Closest Guess gets..........a coookie!!
Daren
P.S. My guess is an 11.43 @ 121
Burning Brakes
Joined: Aug 2008
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From: The Woodlands TX
